Gas-burner.



W. W. OGDEN.

GAS BURNER.

APPLICATION FILED JAN.23,1912.

Patented Mar. 31, 1914.

WITNESSES OR gffln UM Waiier Hf 09 K929 M WIMMQ? WALTER w. OGDEN, or MAQUOKETA, IOWA.

GAS-BURNER.

Specification of Letters Patent.

Patented Mar. 31, 1914.

Application filed January 23, 1912. Serial No. 672,858.

To all whom it may concern Be it known that I, WALTER W. OGDEN, a citizen of the United States, residing at Maquoketa, in the county of Jackson and State of Iowa, have invented certain new and useful Improvements in Gas-Burners, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to gas burners and has particularly for its object the production of an automatic shut off whereby the flow of gas Will be suddenly cut off when the flame is extinguished.

Another object of this invention is the production of a simple and efiicient thermostat used in connection with the gas burner for quickly and eificiently closing the circuit when the flame is burning.

With these and other objects in view the invention consists in general of certain novel constructions, arrangements and combinations of parts, as will be hereinafter fully described, illustrated in the accompanying drawings, and specifically claimed.

In the accompanying drawings :Figure 1 is a top plan view of the bracket. Fig. 2 is a side elevation thereof. Fig. 3 is a side elevation of the thermostat as applied to a different type of burner. Fig. 4 is a section throu h the controlling valve.

Re erring to the drawings by numerals 1 designates the bracket which is provided with the usual control key 2. A burner cap 3 is carried by the outer end of the burner 1 and this burner cap carries a valve 1 which is operated by means of the swinging arm 5. This arm 5 carries at its free end an enlarged portion 6 which is adapted to engage the electromagnet 7 while the flame is burning. A magnet supporting bracket 8 1s secured to the gas bracket 1 and suspended from this bracket is a pair of electro-magnets 7 which are, as stated above adapted to engage the free end of the arm 5 for holding the valve 4 in an open position and allow gas to flow through the cap 3. A thermostat supporting bracket 9 is secured to the cap 3 which is above the valve 4 and this bracket carries a pair of arms 10 and 11 which are formed of metal having different expansible qualities. The contact member 11 is preferably formed of laminated brass, whereas the arm 10 is preferably formed of steel. These arms 10 and 11 are electrically connected to a series of batteries 12 and within the circuit the switch 13 is placed for allowmg the current to be cut 013: when desired. A wire 14 connects the batteries 12 with the electro-magnet 7, and a Wire 15 connects the electro-magnet with the arm 10. The arm 11 is electrically connected through the switch 13 to the battery 12 by means of a wire 16. When the flame is burning and the arm 10 has expanded to such an extent as v to form a contact with the arm 10 the circuit will be closed through the thermostat and current will pass from the battery through the magnets and thermostat, thereby causing the magnets to support the inner end of the arm 5 and hold the valve 4 in an open position. If the flame should become extinguished, the arm by cooling would contract and cause the circuit to be broken whereby the weighted arm 5 would swing to a vertical position and cause the valve 4: to be closed, thereby preventing the escape of gas.

In Fig. 3 I have shown an embodiment of my device wherein the thermostatic arms 10 and 11 are supported by means of an overhanging bracket 17. This bracket 17 is secured to the cap 3 in a manner similar to that as illustrated and described in the preferred embodiment. The present device is especially for use in connection with incandescent mantles.

There has thus been provided a simple and eflicient device of the kind described and for the purpose specified.

What is claimed is A thermostat comprising a bracket, a vertically extending arm carried by said bracket, said arm provided with a laterally extending flange, said flange formed at right angles to said arm and extending for approximately three-fourths the length of said arm, whereby said arm is held in its Vertical position, a contact arm oar- In testimony whereof I hereunto affix my ried by said bracket and provided with a signature in presence of two witnesses. bent end, said contact arm extending parallel to said vertical arm and positioned at a XVALTER W. OGDEN. predetermined distance therefrom, whereby the contact member will expand and close Vitnesses:

the circuit by engaging said vertically ex- JOHN P. GLAHN,

tending arm when said contact arm is heated. W. B. EATON,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patenti. Washington, D. C. 

